Journal
APPLIED SURFACE SCIENCE
Volume 362, Issue -, Pages 79-85Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2015.11.205
Keywords
Electronic structure; Graphene oxide; Hydrolytic dehydrogenation; Ammonia borane; STXM
Categories
Funding
- NSERC
- NRC
- CIHR
- University of Saskatchewan
- National Basic Research Development Program of China [2012CB825800]
- National Natural Science Foundation of China [11275137, 11179032, U1432249]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Fund for Innovative Research Teams of Jiangsu Higher Education Institutions
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Various metal elements (M=Ni, Co, NiCo) were dispersed on graphene oxide (GO) to form the M-GO hybrids by a facile way. The hybrids showed good catalytic activities in the hydrolytic dehydrogenation of ammonia borane (AB, NH3BH3), which were significantly enhanced when compared to the metal nanoparticles or GO alone. The electronic structure of the hybrids has been probed by scanning transmission X-ray microscopy (STXM). The distribution of metal elements was clearly imaged with identical electronic structure. Moreover, an interfacial interaction between metal and GO was observed with the peak intensity proportional to the catalytic performance in the hydrolysis of AB. The results provide new insight into the enhanced performance of the M-GO hybrids and may help for the design of advanced catalysts. (C) 2015 Elsevier B.V. All rights reserved.
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